Travis,
That's a great time to go! We did it in 2001, and although it may have been due to 9/11, the crowds were very low for the most part. I wish we could still do it, but my kids are now too old to pull from school.
The "Not So Scary" Halloween Party is fun, too, although I found that a bit crowded. If you have younger kids, though, it's a great trick-or-treat opportunity!